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Disease of cornea. About SNOMED Relationships. Sample Hierarchy for Corneal Edema. Corneal edema. Bullous keratopathy. Phakic corneal edema. Aphakic corneal edema. Secondary corneal edema. Pseudophakic corneal edema. Idiopathic corneal edema. Corneal stromal edema.
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Disease of cornea About SNOMED Relationships Sample Hierarchy for Corneal Edema Corneal edema Bullous keratopathy Phakic corneal edema Aphakic corneal edema Secondary corneal edema Pseudophakic corneal edema Idiopathic corneal edema Corneal stromal edema Corneal epithelial edema
(15250008) Disease of cornea (118654009) Disorder characterized by edema Relationships for Corneal Edema (27194006) Corneal edema Descriptions Is a Is a Has finding site Associated morphology (79654002) Edema (28726007) Corneal structure
Concept Inter-relationships for Disorders • SNOMED CT uses relationships between concepts to provide logical, computer readable definitions of medical concepts. These relationships, which can be hierarchical or non-hierarchical, enable health data to be re-used for decision support, outcomes analysis and clinical research. Follow this link to see the relationship types applicable to finding and disorders.
Relationship Types for Disorders Clinical Attributes • Finding Site • Causative Agent • Associated Morphology • Laterality Hierarchical • Is a
The “Is a” Relationship • The “Is a” relationship is used to create a hierarchical relationships between concepts, relating specific concepts to a more general category. For example: “Corneal edema” “Is a” (kind of) “Disease of the cornea”
The “Finding site” Relationship • The “Finding site” relationship identifies the part of the body affected by the specific disorder or finding. For example: “Corneal edema” (has) “Finding site” “Corneal structure”
The “Causative agent” Relationship • The “Causative agent” relationship identifies the direct cause of the disorder or finding. The causative agent is the bacterium, virus, toxin or environmental agent that causes the disorder. For example: “Corneal edema due to contact lenses” (has) “Causative agent” “Contact lenses”
The “Associated morphology” Relationship • The “Associated morphology” relationship identifies the abnormal physical condition that is characteristic of a given disorder or finding. For example: “Corneal edema” (has) “Associated morphology” “Edema”
The “Laterality” Relationship • The laterality relationship specifies the side of the body that applies to an anatomy concept. Procedures, findings and disorders can have laterality by qualifying their site (procedure-site or finding-site). For example: “Left kidney” (has) “Laterality” “Left” “Cyst of left kidney” (has) “Finding site” “Left Kidney” “Biopsy of left kidney” (has) “Procedure site” “Left Kidney”